Prefer text/javascript as that's the current recommended mime type for JavaScript files.

ioquatix · web-flow · commit 1bd0f1597d8f · 2023-02-18T19:24:39.000+13:00
diff --git a/lib/rack/mime.rb b/lib/rack/mime.rb
@@ -290,7 +290,7 @@ def match?(value, matcher)
       ".jpg"       => "image/jpeg",
       ".jpgv"      => "video/jpeg",
       ".jpm"       => "video/jpm",
-      ".js"        => "application/javascript",
+      ".js"        => "text/javascript",
       ".json"      => "application/json",
       ".karbon"    => "application/vnd.kde.karbon",
       ".kfo"       => "application/vnd.kde.kformula",
